Which grinding wheel for a replacment?

Discussion in 'Magna-Matic' started by Shady Brook, May 18, 2005.

  1. Shady Brook

    Shady Brook LawnSite Bronze Member
    from Indiana
    Posts: 1,517

    I have a Mag 9000 and it has been outstanding. I am getting to the point where I think I may need a replacment wheel. Which wheel came on the unit, and would there be any benifit in changing to another wheel hardness? A lesson on the different wheels you offer would be great.

  2. Magna-Matic

    Magna-Matic Sponsor
    Posts: 827


    The wheel that came on your machine was an "I" hardness, it is the softest wheel we currently carry. The hardness of a wheel will change the performance of the grinder.

    A very general comparison is:

    Soft wheel = fast sharpening & shorter wheel life
    Hard wheel = slow sharpening & longer wheel life.

    As you make the wheel harder, it breaks down more slowly, retaining heat, and cutting slower. A harder wheel will burn the blade more easily because it can glaze over with steel. This is the problem with bench grinders and angle grinders.

    The "I" is hands down the fastest wheel we carry at the moment, but the "J" offers good performance with better life.

    The choice of wheel is the choice between: labor time to wheel life. In other words would you rather get the job done faster (less labor time) or have longer wheel life.

    Thank you,

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